Insect killing device



FIG. 1 is a front perspective view of an insect killing device showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines depict portions of the insect killing device that form no part of the claim. 

CLAIM The ornamental design for an insect killing device, as shown and described. 